Sound-insulated spring clip



Feb. 24, 1931. G, c, Z 1,793,771

SOUND INSULATED SPRING CLIP Filed March 13, 1950 FIG. 1.

INVENTOR. Geozggz C5022 Patented Feb. 24, 1931 UNITED STATES GEORGE C. BATZ, OF TOPEKA, KANSAS SOUND-INSULATED SPRING CLIP Application fll'ed March 13, 1930- Serial R0. 435,488.

My invention relates to improvements in sound insulated spring clips for use with elliptical sprin s.

The object of my invention is to provide a 6 means of sound insulation between the ends of the elliptical springs for railway coach trucks and their bearing points comprising a box-like structure of two parts slidably positioned to each other and each of the parts 1 0 having seats therein for the ends of the springs, and the parts being separated from vertical contact by a cushion composed of rubber, cork, or any good sound deadening media, as will hereinafter be more fully explained.

Referring to the drawin forming part of this specification, in whi i like characters apply to like parts in the different views:

Fig. 1 is an elevation of an elliptical spring of the type used on railway coach trucks showing the clips in position, one of the clips being shown in cross section.

Fig. 2 is a fragmentary plan view of the elliptical springs illustrating the position of the spring leaves on the clip.

Fig. 3 is a plan view ofthe upper portion of the cushioned spring clip.

Fig. 4 is a plan view of the lower portion of the spring clip.

I Fig. 5 is a perspective view of the end of one of the lower leaves of the elliptical springs illustrating thehemispherical protrusions.

The spring clip, illustrated, comprises a boxlike structure 1, whose upper portion has the spring seats 2 in which are impressed the hemispherical depressions 3. A. similar plurality of seats is formed into the lower dportion or plate 4 having spring seats 5 an depressions 6.

The plate 4 is rectan lar in shape and slidably engages the wafi shown. Interposed between the plate 4 and the corresponding portion of the ox 1 is the cushion 7. The cushion 7 is composed of either rubber, cork or any good sound deadening media. The lower leaf of the spring 8 has at each end the hemispherical protrusions 8', formed to rest in the depressions 3 'as illustrated in'Fig. 2. The up 1per leaf of 5 the spring 9 is formed 1n 9, siml a1 manner s of the box 1 as having the hemispherical protrusions 9' ar ranged to fit the depressions 6.

The cushioned spring clip herein described is simple in construction and effective in operation and is one of the elements used in my improvements in sound insulated coach trucks shown and described in my application, Serial No. 360,429, filed May 4, 1929.

Such modifications may be em loyed as lie within the scope of the appende claim.

What I claim as new and desire to secure by Letters Patent is:

In a spring clip arranged to revent the transmission of sound vibrations etween the upper and lower portions of the elliptical springs on a railway coach truck in combinat1on with one of the leaves of the spring portions, a metal box-like structure having seats on its upper portion to accommodate the lower leaf of the upper part of the spring, 7 the seats having hemispherical. depressions to correspond with hemispherical protrusions on the contacting surface of the spring leaf,

a rectan lar plate slidably mounted in the box and iiiving seats and depressions similar to those in the upper portion of the said boxlike structure, to accommodate the upper leaf of the lower portion of the spring, a rectangular cushion composed of sound deadenin media interposed between the said plate and the opposing portion of the box-like structure for the purpose described.

In testimony whereof I afiix my signature.

GEORGE C. BATZ. 

